Sports · 5 hours ago
Air pollution slows marathon times, hitting non-elite runners hardest
Slower marathon times, particularly among non-elite runners, have been associated with increased nitrogen dioxide concentrations on race days. For every microgram-per-cubic-metre increase in nitrogen dioxide, men's finishing times were 1.43 minutes slower and women's 1.56 minutes slower. A study of 2.7 million performances across six major marathons found non-elite runners' times rose by 2.12 minutes.
Reported by Euronews.com · How we write briefs